To test the effects of low frequency deep rTMS using the novel H-coil on the motor, affective and cognitive deficits in patients with asymmetric Parkinson's disease (PD) and to establish its safety in this population. The investigators anticipate that reaching deeper brain layers and larger volume of activation with the novel H-coil may induce significantly better therapeutic effects in patients with PD and will pave the way for establishing a novel and effective treatment for this disorder.